Warn when host CA inheritance is disabled

Changes the log level from info to warning when host CA inheritance is skipped by configuration, and includes the number of host certificates detected. This makes intentional skips more visible while still showing useful context.

misc/build.func

@@ -1009,6 +1009,7 @@ base_settings() {
 
   APT_CACHER=${var_apt_cacher:-""}
   APT_CACHER_IP=${var_apt_cacher_ip:-""}
+  INHERIT_HOST_CA="${var_inherit_host_ca:-auto}"
 
   # Runtime check: Verify APT cacher is reachable if configured
   if [[ -n "$APT_CACHER_IP" && "$APT_CACHER" == "yes" ]]; then
@@ -1088,7 +1089,7 @@ load_vars_file() {
 
   # Allowed var_* keys
   local VAR_WHITELIST=(
-    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_keyctl
+    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_inherit_host_ca var_keyctl
     var_gateway var_hostname var_ipv6_method var_mac var_mknod var_mount_fs var_mtu
     var_net var_nesting var_ns var_os var_protection var_pw var_ram var_tags var_timezone var_tun var_unprivileged
     var_verbose var_version var_vlan var_ssh var_ssh_authorized_key var_container_storage var_template_storage var_searchdomain
@@ -1285,6 +1286,12 @@ load_vars_file() {
             continue
           fi
           ;;
+        var_inherit_host_ca)
+          if [[ "$var_val" != "yes" && "$var_val" != "no" && "$var_val" != "auto" ]]; then
+            msg_warn "Invalid host CA inheritance value '$var_val' in $file (must be yes/no/auto), ignoring"
+            continue
+          fi
+          ;;
         var_container_storage | var_template_storage)
           # Validate that the storage exists and is active on the current node
           local _storage_status
@@ -1324,7 +1331,7 @@ default_var_settings() {
   # Allowed var_* keys (alphabetically sorted)
   # Note: Removed var_ctid (can only exist once), var_ipv6_static (static IPs are unique)
   local VAR_WHITELIST=(
-    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_keyctl
+    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_inherit_host_ca var_keyctl
     var_gateway var_hostname var_ipv6_method var_mac var_mknod var_mount_fs var_mtu
     var_net var_nesting var_ns var_os var_protection var_pw var_ram var_tags var_timezone var_tun var_unprivileged
     var_verbose var_version var_vlan var_ssh var_ssh_authorized_key var_container_storage var_template_storage
@@ -1407,6 +1414,7 @@ var_ssh=no
 # HTTP/HTTPS proxy (optional - for networks requiring a proxy)
 # var_http_proxy=http://proxy.local:8080
 # var_http_no_proxy=localhost,127.0.0.1,.local
+# var_inherit_host_ca=auto
 
 # Features/Tags/verbosity
 var_fuse=no
@@ -1507,7 +1515,7 @@ get_app_defaults_path() {
 if ! declare -p VAR_WHITELIST >/dev/null 2>&1; then
   # Note: Removed var_ctid (can only exist once), var_ipv6_static (static IPs are unique)
   declare -ag VAR_WHITELIST=(
-    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_keyctl
+    var_apt_cacher var_apt_cacher_ip var_brg var_cpu var_disk var_fuse var_github_token var_gpu var_http_no_proxy var_http_proxy var_inherit_host_ca var_keyctl
     var_gateway var_hostname var_ipv6_method var_mac var_mknod var_mount_fs var_mtu
     var_net var_nesting var_ns var_os var_protection var_pw var_ram var_tags var_timezone var_tun var_unprivileged
     var_verbose var_version var_vlan var_ssh var_ssh_authorized_key var_container_storage var_template_storage var_searchdomain
@@ -1657,6 +1665,7 @@ _build_current_app_vars_tmp() {
   _apt_cacher_ip="${APT_CACHER_IP:-}"
   _http_proxy="${HTTP_PROXY:-${var_http_proxy:-}}"
   _http_no_proxy="${HTTP_NO_PROXY:-${var_http_no_proxy:-}}"
+  _inherit_host_ca="${INHERIT_HOST_CA:-${var_inherit_host_ca:-auto}}"
   _fuse="${ENABLE_FUSE:-no}"
   _tun="${ENABLE_TUN:-no}"
   _gpu="${ENABLE_GPU:-no}"
@@ -1710,6 +1719,7 @@ _build_current_app_vars_tmp() {
     [ -n "$_apt_cacher_ip" ] && echo "var_apt_cacher_ip=$(_sanitize_value "$_apt_cacher_ip")"
     [ -n "$_http_proxy" ] && echo "var_http_proxy=$(_sanitize_value "$_http_proxy")"
     [ -n "$_http_no_proxy" ] && echo "var_http_no_proxy=$(_sanitize_value "$_http_no_proxy")"
+    [ -n "$_inherit_host_ca" ] && echo "var_inherit_host_ca=$(_sanitize_value "$_inherit_host_ca")"
 
     [ -n "$_fuse" ] && echo "var_fuse=$(_sanitize_value "$_fuse")"
     [ -n "$_tun" ] && echo "var_tun=$(_sanitize_value "$_tun")"
@@ -1874,7 +1884,7 @@ advanced_settings() {
     TAGS="community-script${var_tags:+;${var_tags}}"
   fi
   local STEP=1
-  local MAX_STEP=30
+  local MAX_STEP=31
 
   # Store values for back navigation - inherit from var_* app defaults
   local _ct_type="${var_unprivileged:-1}"
@@ -1896,6 +1906,7 @@ advanced_settings() {
   local _apt_cacher_ip="${var_apt_cacher_ip:-}"
   local _http_proxy="${var_http_proxy:-}"
   local _http_no_proxy="${var_http_no_proxy:-}"
+  local _inherit_host_ca="${var_inherit_host_ca:-auto}"
   local _mtu="${var_mtu:-}"
   local _sd="${var_searchdomain:-}"
   local _ns="${var_ns:-}"
@@ -2725,9 +2736,47 @@ advanced_settings() {
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 25: Container Timezone
+    # STEP 25: Host CA Inheritance
     # ═══════════════════════════════════════════════════════════════════════════
     25)
+      local host_ca_count=0
+      local host_ca_dir="/usr/local/share/ca-certificates"
+      local cert
+      shopt -s nullglob
+      for cert in "$host_ca_dir"/*.crt; do
+        host_ca_count=$((host_ca_count + 1))
+      done
+      shopt -u nullglob
+
+      if [[ $host_ca_count -eq 0 ]]; then
+        _inherit_host_ca="auto"
+        ((STEP++))
+        continue
+      fi
+
+      local host_ca_default_flag=""
+      [[ "$_inherit_host_ca" == "no" ]] && host_ca_default_flag="--defaultno"
+      if whiptail --backtitle "Proxmox VE Helper Scripts [Step $STEP/$MAX_STEP]" \
+        --title "HOST CA INHERITANCE" \
+        --ok-button "Next" --cancel-button "Back" \
+        $host_ca_default_flag \
+        --yesno "\nInherit host CA certificates into this container?\n\nDetected on host: ${host_ca_count} certificate(s) in:\n${host_ca_dir}\n\nRecommended for private PKI / TLS-inspection environments.\n\n(App default: ${var_inherit_host_ca:-auto})" 16 72; then
+        _inherit_host_ca="yes"
+      else
+        if [ $? -eq 1 ]; then
+          _inherit_host_ca="no"
+        else
+          ((STEP--))
+          continue
+        fi
+      fi
+      ((STEP++))
+      ;;
+
+    # ═══════════════════════════════════════════════════════════════════════════
+    # STEP 26: Container Timezone
+    # ═══════════════════════════════════════════════════════════════════════════
+    26)
       local tz_hint="$_ct_timezone"
       [[ -z "$tz_hint" ]] && tz_hint="(empty - will use host timezone)"
 
@@ -2750,9 +2799,9 @@ advanced_settings() {
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 26: Container Protection
+    # STEP 27: Container Protection
     # ═══════════════════════════════════════════════════════════════════════════
-    26)
+    27)
       local protect_default_flag="--defaultno"
       [[ "$_protect_ct" == "yes" || "$_protect_ct" == "1" ]] && protect_default_flag=""
 
@@ -2774,9 +2823,9 @@ advanced_settings() {
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 27: Device Node Creation (mknod)
+    # STEP 28: Device Node Creation (mknod)
     # ═══════════════════════════════════════════════════════════════════════════
-    27)
+    28)
       local mknod_default_flag="--defaultno"
       [[ "$_enable_mknod" == "1" ]] && mknod_default_flag=""
 
@@ -2798,9 +2847,9 @@ advanced_settings() {
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 28: Mount Filesystems
+    # STEP 29: Mount Filesystems
     # ═══════════════════════════════════════════════════════════════════════════
-    28)
+    29)
       local mount_hint=""
       [[ -n "$_mount_fs" ]] && mount_hint="$_mount_fs" || mount_hint="(none)"
 
@@ -2821,9 +2870,9 @@ advanced_settings() {
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 29: Optional host-side post-install hook (path on the Proxmox HOST)
+    # STEP 30: Optional host-side post-install hook (path on the Proxmox HOST)
     # ═══════════════════════════════════════════════════════════════════════════
-    29)
+    30)
       local _hook_prompt="Optional: absolute path to a *.sh file ON THE PROXMOX HOST.
 
 It runs as root on the HOST (NOT in the LXC) after the container
@@ -2873,9 +2922,9 @@ Leave empty to skip."
       ;;
 
     # ═══════════════════════════════════════════════════════════════════════════
-    # STEP 30: Verbose Mode & Confirmation
+    # STEP 31: Verbose Mode & Confirmation
     # ═══════════════════════════════════════════════════════════════════════════
-    30)
+    31)
       local verbose_default_flag="--defaultno"
       [[ "$_verbose" == "yes" ]] && verbose_default_flag=""
 
@@ -2904,6 +2953,7 @@ Leave empty to skip."
       local apt_display="${_apt_cacher:-no}"
       [[ "$_apt_cacher" == "yes" && -n "$_apt_cacher_ip" ]] && apt_display="$_apt_cacher_ip"
       local http_proxy_display="${_http_proxy:-(none)}"
+      local inherit_ca_display="${_inherit_host_ca:-auto}"
 
       local post_install_display="${_post_install:-(none)}"
       local post_install_warn=""
@@ -2934,6 +2984,7 @@ Advanced:
   Timezone: $tz_display
   APT Cacher: $apt_display
   HTTP Proxy: $http_proxy_display
+  Inherit Host CAs: $inherit_ca_display
   Verbose: $_verbose
   Post-Install Script: ${post_install_display}${post_install_warn}"
 
@@ -2979,6 +3030,7 @@ Advanced:
   APT_CACHER_IP="$_apt_cacher_ip"
   HTTP_PROXY="$_http_proxy"
   HTTP_NO_PROXY="$_http_no_proxy"
+  INHERIT_HOST_CA="$_inherit_host_ca"
   VERBOSE="$_verbose"
   var_post_install="$_post_install"
 
@@ -2997,6 +3049,7 @@ Advanced:
   var_sdn_vnet="$_sdn_vnet"
   var_http_proxy="$_http_proxy"
   var_http_no_proxy="$_http_no_proxy"
+  var_inherit_host_ca="$_inherit_host_ca"
 
   # Format optional values
   [[ -n "$_mtu" ]] && MTU=",mtu=$_mtu" || MTU=""
@@ -3945,6 +3998,81 @@ EOF
   msg_ok "Applied HTTP proxy in container"
 }
 
+# ------------------------------------------------------------------------------
+# _apply_host_ca_certs_in_container()
+#
+# - Copies administrator-provided CA certificates from the Proxmox host into the
+#   container before base package bootstrap
+# - Source: /usr/local/share/ca-certificates/*.crt (Debian convention)
+# - Refreshes the container trust store when update-ca-certificates is available
+# - No-op when no host certificates are present; failures are non-fatal
+# ------------------------------------------------------------------------------
+_apply_host_ca_certs_in_container() {
+  local host_ca_dir="/usr/local/share/ca-certificates"
+  [[ -z "${CTID:-}" ]] && return 0
+  local inherit_host_ca="${INHERIT_HOST_CA:-${var_inherit_host_ca:-auto}}"
+
+  local -a host_certs=()
+  local cert
+  shopt -s nullglob
+  for cert in "$host_ca_dir"/*.crt; do
+    host_certs+=("$cert")
+  done
+  shopt -u nullglob
+
+  [[ ${#host_certs[@]} -eq 0 ]] && return 0
+
+  case "${inherit_host_ca,,}" in
+  no | false | 0 | off)
+    msg_warn "Skipping host CA inheritance by configuration (${#host_certs[@]} host certificate(s) available)"
+    return 0
+    ;;
+  esac
+
+  msg_info "Inheriting host CA certificates into container"
+
+  local found=${#host_certs[@]}
+  local copied=0
+  local skipped=0
+  local cert_name
+
+  pct exec "$CTID" -- mkdir -p /usr/local/share/ca-certificates >/dev/null 2>&1 || {
+    msg_warn "Failed to create CA certificate directory in container"
+    return 0
+  }
+
+  for cert in "${host_certs[@]}"; do
+    cert_name="$(basename "$cert")"
+    if [[ ! -r "$cert" || "$cert_name" != *.crt ]]; then
+      msg_warn "Skipping invalid or unreadable host CA certificate: ${cert_name}"
+      skipped=$((skipped + 1))
+      continue
+    fi
+
+    if pct push "$CTID" "$cert" "/usr/local/share/ca-certificates/${cert_name}" >/dev/null 2>&1; then
+      pct exec "$CTID" -- chmod 644 "/usr/local/share/ca-certificates/${cert_name}" >/dev/null 2>&1 || true
+      copied=$((copied + 1))
+    else
+      msg_warn "Failed to push host CA certificate: ${cert_name}"
+      skipped=$((skipped + 1))
+    fi
+  done
+
+  if [[ $copied -eq 0 ]]; then
+    msg_warn "No host CA certificates were copied (${found} found, ${skipped} skipped)"
+    return 0
+  fi
+
+  local refresh_shell="bash"
+  [[ "$var_os" == "alpine" ]] && refresh_shell="ash"
+
+  if pct exec "$CTID" -- "$refresh_shell" -c 'command -v update-ca-certificates >/dev/null 2>&1 && update-ca-certificates' >/dev/null 2>&1; then
+    msg_ok "Inherited ${copied} host CA certificate(s) and updated trust store (${skipped} skipped)"
+  else
+    msg_warn "Copied ${copied} host CA certificate(s), but trust store update failed or update-ca-certificates is unavailable (${skipped} skipped)"
+  fi
+}
+
 # ------------------------------------------------------------------------------
 # build_container()
 #
@@ -4565,6 +4693,7 @@ EOF
   local install_exit_code=0
 
   _apply_http_proxy_in_container
+  _apply_host_ca_certs_in_container
 
   # Continue with standard container setup
   if [ "$var_os" == "alpine" ]; then